Association between Air Pollution Exposure and the Prevalence of Chronic Obstructive Pulmonary Disease in Urban versus Rural Populations.: Original Article . Journal of Pak International Medical College, Pak International Medical College, Peshawar, Pakistan, v. 1, n. 1, p. 1–7, 2025. DOI: 10.64911/ws709m46. Disponível em: https://jpimc.org/index.php/JPIMC/article/view/11.. Acesso em: 4 feb. 2026.